Robert brass



(No Model.) 2 sheets Sheet 1.

R. BRASS.

MACHINE FOR RIVETING STAPLES T0 MAIL BAGS.

' No. 331,373. Patented Dec. 1, 1885.

WITNESSES IIVVE/l/TOR i; @724 MM, 2 By AfforneyJ Fhawumo n hm, wmin mn. ac,

(No Model.) 2 Sheets-Sheet 2.

R. BRASS.

MACHINE FOR RIVETING STAPLES T0 MAIL BAGS.

No. 331,373. Patented Dec. 1, 1885.

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WITNESSES By Afiorney-l N. PETERS, Phalo-Llthugraphon wminmun. D. C.

lUNTTnn STaTns PaTnnT ROBERT BRASS, OF BROOKLYN, NEW YORK, ASSIGNOB TO JOHN BOYLE, OF SAME PLACE.

MACHENE FOR RiVETlNG STAPLES TO MAIL-BAGS.

FJPBCEFECATION. forming part of Letters Patent No. 331,373, dated December 1, 1885.

Application filrd May 8,1885. Serial No. 164,751. (No model.)

To aZZ whom it may concern:

Be it known that 1, ROBERT Bnnss, of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Machines for Rivet ing Staples to Mail-Bags, of which the following is a specification.

This invention has reference to an improved machine for riveting staples to mail-bags and other articles made of canvas, leather, and similar fabrics; and the invention consists of a stapleriveting machine in which a staple holding clamp is moved forward in a bedplate by a rack and pinion and locked intermittently in position, so as to expose one staple after the other to the action below the rivetingdie. The clamp is composed of fixed jaws having depressed portions corresponding to the size of the staple, and of movable jaws having raised portions corresponding to the interior shape of the staple, said movable jaws beingattaehed to longitudinal connecting-bars that are operated by a hand-lever which is locked by a suitable cam-lever after the staples have been inserted into the jaws of the clamp.

In the accompanying drawings, Figure 1 represents a front elevation of my improved machine for riveting staples to mail-bags. Fig. 2 is a side elevation of the staple-holding clamp, drawn on a larger scale and with a part broken away. Figs. 3 and 4 are plans of Fig. 2, showing the jaws of the clamp respectively in closed and open position. Fig. 5 is an end elevation of the clamp, partly in section. Figs. 6 and 7 are vertical transverse sections of the same on line a: m, Fig. 4, showing, respectively, the fixed and movablejaws; and Fig. 8 shows a staple as supported by the clamp and after being riveted to the bag.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the supporting-frame of my improved machine for riveting staples to mail'bags.

To a'horizontal bed-plate, A, of the frame A is attached by recessed lugs and fasteningscrews the grooved guideway B, which guides the dovetailed staple-holding clamp O. The clamp O is made of a length corresponding to the number of staples that are required to be riveted to the mail-bag or other article. The clamp Oconsists of two main parts, a grooved slide-piece, 0, having fixed jaws e, and longitudinal side straps, C", having transverse jaws 6 attached thereto. The bottom of the slidepieee O is proivded with a rack, 0;, that meshes with a pinion, b, on a crankshaft, b, by which the entire clamp O is moved forward or backward, as required. One side of the slide-piece G is provided with inclined teeth (2 :and intermediate recesses, d, which are engaged by an in wardly-proj ecting pin, d, that passes through a hole of the guideway 13, as shown in Figs.

3 and 4, and that is attached to a Springplate, 6 5

ward the riveting-die, the pin d passes along 7 5 the inclined sides of the teeth and engages successively the recesses cl, so asto hold the clamp in proper position for the action of the riveting-die on the staples in the clamp.

The jaws of the slidepieee O are provided in their transverse sides with recesses e, corresponding to the exterior shape of the staples to be used, while the movable jaws e are provided at their transverse sides that face the recessed sides of the jaws e with raised per tions 6 that correspond to the inner shape of the staples, so that when the jaws e are moved toward the jaws e the raised portionse project into the recesses, e and hold thereby the staples rigidly in position.

The movable jaws e are capable of lateral motion in the slide-piece C to a distance that corresponds to the thickness of the staples by the connecting side straps, G which are firmly bolted to the jaws e.

To a lug, e, of the end jaw, e, is pivoted a hand-lever, F, that is again pivoted at its rear end to the slide-piece O, the lever F being rigidly held in position by means of a camlever, F, (shown in Figs. 2 and 3,) which cam- IOO lever is fulcrumed to a lug, 6 at theend of the slide-piece O, and which serves to lock the movable jaws e to the fixed jaws c after the staples have been inserted into the jaws.

The machine is operated as follows: As many staples as are required for the ,mail-bag or other article are dropped into the recesses of the fixed jaws 6 after the movable jaws e have been moved away from the same by the handlever F. The movable jaws are then closed by turning the hand-lever toward the left, whereupon the latter is locked by the camlever F and the staples held rigidly by the jaws e e. The spring-pawl D is next released by the depression of the treadle, so that the entire clamp O can be moved in the guideway B toward the left until the first staple which is to be riveted to the bag is below the punch of the machine. The pawl d is released, so as to enter into the side recess of the slidepiece and hold thesame firmly in position. The washers are next applied onto the protruding ends of the first staple, and these ends then passed through the holes of the mail-bag or other article,which holes have been punched before riveting on the staples. Washers are next placed on the ends at the top of the bag, and then the projecting ends riveted on the same by lowering the riveting-die. By successively moving the slide-piece forward and riveting the ends of one staple after another to the fabric by the action of the rivetingmachine the riveting of all the staples is accomplished in a quick, uniform, and effective manner. The jaws of the clamp are. then separated by the hand-lever F and the staples removed from the jaws. New staples are then inserted into the recesses of the jaws,the latter closed and the projecting ends of the staples riveted to the next bag, and so on.

I do not claim the riveting-machine, as the same is well known, but simply the stapleholding clamp by which the staples are successively moved to below the rive ing punch or die.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. In a machine for riveting staples to mailbags and other articles, the combination of a slide-piece having fixed jaws, laterally-movable jaws connected by side straps, and mechanism, substantially as described, for locking the jaws to the staples, substantially as set forth.

2. In a machine for riveting staples to mailbags and other articles, the combination of a.

slide-piece having fixed transverse jaws with recessed faces, laterally-movable jaws having raised portions, side straps connecting the movable jaws, a hand-lever for operating the same, and a cam-lever for locking the handlever and holding the staples rigidly in position in the jaws, substantially as set forth.

3. In a machine for riveting staples to mailbags and other articles, the combination of a fixed guideway, a staple-holding clamp having a bottom rack, a crankshaft having a pinion meshing with said rack, and a springpawl that engages side recesses of the clamp, and suitable riveting mechanism, substantial y as set forth.

4. In a machine for riveting staples to mailbags and other articles, the combination of a fixed gnideway, a staple-holding clamp having fixed and movable jaws with recessed and raised faces corresponding to the shape of the staples, means for moving the clamp forward in the guideway, and a locking device for intermittently holding it in position for the action of the rivetingdie, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

ROBERT BRASS.

Witnesses:

PAUL GOEPEL, SIDNEY MANN. 

